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Occasional Com Radio Issue

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oskrypuch View Drop Down
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Joined: 09 Nov 2012
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Post Options Post Options   Thanks (0) Thanks(0)   Quote oskrypuch Quote  Post ReplyReply Direct Link To This Post Posted: 29 Oct 2018 at 5:35pm
I concur, swapping out the tray would be the thing to try, only a few hours labor. There doesn't appear to be a design issue in the IFD COM radios, with thousands of units out there for a number of years now, if there was it would be obvious.

My IFD540 works quite well. The SL-30 I have as #2 is about the same in performance, and it is a very good unit.

If Avidyne even sent out three replacement units, looks like they did a yeoman effort. Even a modest non-connect of the antenna would explain your problems. The Avidyne trays are much better construction, for sure, try the tray swap -- very little to lose. 

* Orest



Edited by oskrypuch - 29 Oct 2018 at 5:38pm
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programmer@pcmforles View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote programmer@pcmforles Quote  Post ReplyReply Direct Link To This Post Posted: 29 Oct 2018 at 8:46pm
Agreed.   I have also found before that if the BNC connector that is installed is not done properly the center contact does not stick out far enough and it will have an intermittent engagement with the backplate BNC connection.   I've accidentally done this before with the one crimper tool I had that I've since replaced.   On the IFD units the Com antenna connection is near the very top and often on a tight fit there is pressure on the com antenna coax with the glareshield or other things near the back of the firewall.   

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